$ git clone -n https://src.fedoraproject.org/rpms/lua-luv.git /var/lib/mock/f45-build-17665-502/root/chroot_tmpdir/scmroot/lua-luv
Cloning into '/var/lib/mock/f45-build-17665-502/root/chroot_tmpdir/scmroot/lua-luv'...
$ git fetch origin 29d9b32c12dc531f8f4e8864a7c2006e3c229838:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lua-luv
 * [new ref]         29d9b32c12dc531f8f4e8864a7c2006e3c229838 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29d9b32 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild